91180sr

Ok so I had massive engine failure, purchased a used motor it was gone, guy disappeared! So I went and had a Na build because I didn't wanna boost.

I went with a kit from z1motorsports.
2004 vq35de
Fully balanced and blue printed block.By Engine Lab in Tampa Florida.
Heads cleaned and machined from previouse damage for new cams.

performance 3 angle valve job
Wiseco Pistons +.20 96mm (11:0)
Piston Ring set
Wrist pins
Eagle Rods with caps
Nissan OEM Gasket kit
ACL Engine Bearings (Rods, Mains, Thrust)
Arp main studs

Osiris/uprev tune
Brian crower 264 cams.
Megan headers
Megan res test pipes
Nismo cat back.
K&n drop in.
Spec stg2 clutch

I'm aware it will not make any crazy numbers being a de motor. But it's my daily driver And I'm expecting a nice setup. Just wondering should I be expecting 270ish? Ive herd 300whp range but from what I've been seeing I don't thing so.. Let me know what you guys think.

Chako135

iTrader: (31)

I would reccommend you try different headers and test pipes, but with everything else you should hit 300+ on the DE (depends on the tune really)

KA24DE

I see problems with:

Intake Choice: Drop in filters do next to nothing, and if I remember correctly, the pre-06 Airbox isn't anything special. Get the 06 airbox if you want to keep it OEM, but I have heard good things about the AEM true cold air intake.

Exhaust: The Megan Header will more than likely be a restriction, mainly because it's collectors aren't big enough. I don't see a Y pipe listed, and there is some power left on the table there.

Top end: I don't see anything about a 5/16" or spacer of any type listed. Again, power left on the table.

I expect a solid 270-280whp.

91180sr

Ok , so the Megan headers would be more testifying then stock? Or just more then a nice brand? Also I have a Nismo y pipe it's all Nismo. And yea I will be doing a spacer and intake within a month. So with that added I should expect 290-300ish? I'll be sticking with the metals only cause I got them cheap and am
Past budget for build.

Thanks do input. I'm excited lol

bbs350z

iTrader: (85)

my opinion:

sg longtube headers...pricey, but well worth it. also look into their cams, they did alot of custom stuff and make great numbers (346rwhp last i checked)

mrev manifold or spacer (idk about them both and how it works)

jwt popcharger-cheap, simple, works great.

tilton clutch/flywheel-if you can find it

or the money your spending can get you a low mileage motor and a supercharger setup that wont put much stress on your block, and give you 400+rwhp quite easily.

if your deadset on being n/a contact sg motorsports, they know their stuff http://www.sg-motorsport.com/main.html

http://www.sg-motorsport.com/SGEnduro_Modified.pdf

KA24DE

Mrev is just a ported nonrev lower, so there is no point in buying one, but the spacer does help the overall volume of the plenum. As far as camshafts go, I think SG's shootout showed the JWT cams to have the best grind on stock heads versus other brands. Because you have the BC cams, stick with them, they will work well enough.

The best advice I can give is too look at some modifications you can do to those headers if you don't want to shell out major money for SG's long tubes. A new collector and larger diameter down pipes would probably work wonders on those headers.

davidv

iTrader: (2)

I think this will be a dyno racing champion.

1cockyZ

iTrader: (46)

This thread is lame and use search. Bc264 got mad dynos out there. Reading is fundamental. Did I just pee in your cheerios at your search ignorance? Don't care!

Nexx

iTrader: (41)

274.23971879874895798738912478931624089612486589472510963891 463892165984231 bhp

kacz07

iTrader: (15)

Increase the manifold volume with a big spacer or big upper, then swap in a lower revup collector. Should break 300whp and make high rpm power. Manifold volume will be key.

KA24DE

No, stop saying that.
https://my350z.com/forum/na-builds/4...d-build-6.html

03threefiftyz

iTrader: (25)

84whp per liter.

Z1 Performance

iTrader: (564)

Rather than asking people to guess some arbitrary # just build it and you tell us what it made before and after

Ditch the headers, ditch the test pipes and make other choices

Revup collector will help up top at the cost of some midrange. A properly ported non revup will give you the best of both worlds. Intake is essentially inconsequential. Revup airbox is nicer but not dramatically different from Pre revups. They come up for sale used for under $100 so if you can find one grab it. If not it won't leave alot on the table so no worries.

You need a spacer as mentioned- really doesn't matter which given the rest of the setup

A set of gears would compliment it nicely as a future addition.

91180sr

Thanks for good input guys, I'm not shooting for the top Na build or anything. But Wante to hear some up to date opinions. As far as people saying search.... Search what? I'm asking opinions about exactally what I have. Not about hat others had or want me to have lol. But I'm sure one day I'll look into new header if it means good gains. I have car to go fast. This is to dd and be quick so I should be happy with it. Thanks again and I will post numbers next week when we dyno and tune.

e30cabrio

iTrader: (30)

I have 271 on the mods in my sig, hoping for 310+ with 96mm 11+ compression & BC 88mm crank & undetermined cams.

1cockyZ

iTrader: (46)

Maybe search and find out my setup was almost exactly the same with a lower plenum comparison in the thread.

kacz07

iTrader: (15)

With aftermarket cams (or aftermarket reflash/ems), you have two options:

1. Swap in a lower revup collector and increase volume w/ a big spacer/upper plenum (SG, SexyRob)

You are trading some power under the curve for peak power, but with exhaust cam phasing, this could be massaged. Additionally, with cams, it is possible to extend the torque band and, consequently, add or maintain peak power from 6300rpm and up. Maybe to 8k and beyond, but that's cam dependent. Extending the powerband after the peak makes up for power under the curve, but you need upgraded valve springs and shims to rev higher.

Or, as mentioned/employed by Adam and reiterated by SexyRob's intake dynos, myself, and Copec:

2. Properly ported Non-rev lower collector and spacer/big upper plenum (Z1). A properly ported Non-rev lower collector will eliminate the dip and turndown in power that most DEs see around 6300 and shift peak to 6600rpm. After that, the cams will determine how far that extends. You really don't have to sacrifice any power under the curve with this method.

References:
https://my350z.com/forum/8590473-post156.html

Look at torque, peaks, and power to redline in SG's non-rev and Jmccarty's
_______________

A side note, a regular Non-rev lower collector, as seen in SG's build will peak at 6300, dip down, and then climb back up to near peak or above (cam dependent, SG, Jmccarty). I'm guessing that the airflow, although less than what is seen at the typical Non-rev peak, is still able to allow for sufficient torque to be produced, AFTER the peak and higher in the rpm range.

I need to support these observations with dynos, but I'm busy now.

91180sr

thanks for that! sounds like good advice. Ill have to dyno tune next week, then I will be installing spacer, and trying out the porting of the lower and re tuning. So I will have before and after intake mods.

kacz07

iTrader: (15)

I'd get the biggest spacer you can. Motordyne has the 1/2" or Powerlabs has a 3/8th". Not sure what other options there are, but you can find a larger upper plenum like Crawford or APS. Keep us updated and let us know how it goes.

The porting of the lower collector should probably be under advice from someone like Adam at Z1auto or the like. The runners are what you'd be porting in the lower. They're much more sensitive to modifications than just making space in the upper.

Z1 Performance

iTrader: (564)

Fwiw when I had my ported non revup (my original setup) I used a measly 1/4 inch spacer. But, all aspects of my plenum were altered and a lot of time was spent on it wasn't merely a ported collector.